Convolute log-planing machine



(No Model.) 2-Sheets-Sheet 1.'

' D. K. ALLINGTON.

GONVOLUTE LOG PLANING MACHINE. No. 337,648. v Patented Mar; 9, 1886.

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(No Model.) 2 Sheets-Sheet 2.

1). 'K. ALL'INGTON. UONVOLUTB LOG PLANING MACHINE. No. 337,648. Patented Mar. 9, 1886.

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N, PETERS, Pbciulflhogriplur. Washington. D. C.

UNrTED STATES DAVID K. ALLINGTON, OF EAST SAGINAVV, MICHIGAN.

CONVOLUTE LOG-PLANlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 337,648, dated March 9. 1886.

Application filed March 13, 1885. Serial No. 158,754. No model.)

I 0 all whom it may concern.-

Be it known that I, DAVID K. ALLINGTON, residing at East Saginaw, in the county of Saginaw and State of Michigan, have invented a new and useful Planing-Machine, of which the following is a specification.

The object of my invention is to construct a planing-machine in which a log is revolved in a convolute path and planed by revolving planer-knives, for the purpose of preparing the log for bandsaw or other machines that cut in a convolute path. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side view of the machine with the ends of the planer-headcut away. Fig. 2 is a plan view of the entire machine. Fig. 3

is an end .view with a portion of the spurwheel e cut away to show the eccentric journal-box Z. Fig. 4 is an end view of the machine, showing the bolt 0 and arm h for securing the longitudinal sliding frame B in position against the log. Fig. 5 represents the end of a log after being operated upon by the machine.

Similarletters referto similar partsthroughout the several views.

In the drawings, A represents the supporting-frame, made of wood or any suitable material framed together, as shown, on one end of which is securely bolted the frame B. On top of this frame are beveled guides c c, in which slides the carriage G, which has journaled on it the mandrel d,which supports and revolves the log, and has on its outer end the spur-wheel e,which meshes with and is driven by the pinion f, which is turned by the crank 9. On the opposite end of the supportingframe is the frame B, which can be adjusted longitudinally thereon to admit of the different lengths of logs,and secured in position againstthe log by the bolt 0 and arm h. On this frame are beveled guides c c, in which slides the carriage O, which has journaled on it the mandrel d, which supports and secures the log in the machine.

On the supporting-frame A, and a suitable distance from the mandrels d and d, areposts D and D, to which is journaled the planerhead E in the journal-bearings F and F,whiclr is driven by the pulleys G and G from any convenient power. The mandrel dis also provided with the miter-geari,which meshes with and drives the miter-gear j on the shaft k, which is journaled at one end in the eccentricbox I on the carriage and toward the opposite end in the angle journal-box m, bolted to the frame B.

The shaft is is provided with a hand-crank, n, for turning the same, and the miter-gearp, which is feathered thereon, to allow the shaft to slide backward and forward with the travel of the carriage. This miter-gear meshes with and drives the miter gear q on the shaft 1*, which is journaled at one end in the angleboxes m and s, bolted to the frame B, and at the opposite end in the angle-box 8, which is bolted to the longitudinal sliding frame B. This shaft r is provided with the miter-gears t and t, which mesh with and drive the mitergears 10 and u on the feed-screws o and c, which are journaled in the angle'boxes s and s, which are bolted securely to the frames B and B independently of the carriages, and threaded in the boxes to and w on the carriages G and C. The miter-gear t is feathered on the shaft r to admit of the longitudinal movement of the frame B. The dog y is securely fastened to the mandrel d, and fits in a slot in the centering-flange 00, which revolves the log with the mandrel d while being operated upon by the planer-head E.

The centering-flanges x and 0c are disks provided with spurs to engage with and prevent the log from slipping, and are provided with countersunk centers. The head flange, w, is provided with slots for the reception of the dog y. After the centering-flanges are placed on the log, it is placed in the machine and centered on the mandrel d and the dog y in a slot in the centering-flange w and the mandrel d in the centering-flange 00, which is screwed up by turning the hand-wheel, which secures the log firmly between the carriages G and O, and the mandrel d is secured from turning and becoming loose by the set-screw b. The log, after being secured in the machine, must be fed up to the planer-head E at some place on the log selected by the operator as a commencing place; but in order to do this more rapidly than could be accomplished by turning the crank g, the arrangement for feeding the log up to the planer-head and the arrangement for revolving the log must be so con st-ructed that one of the movements can be 0perated independently ot the other, or both can be operated in unison by turning the crank g. This I accomplish by the ceeentriebox Z,whieh has a lever, Z, that by shilling to one side throws the mitergearsj and 1' out of mesh and allows the operator to turn the crank it on the shalt 7:, which will feed the log up to the face of the planer-head independently of the arrangement for revolving the log. It will also be seen that by turning the crank 9 while these gears are out of mesh the log will be revolved in a circle. When the log has been moved up to the face of the planer-head, as described above, it must then be revolved in order to plane the log convolutely around its periphery. This convolute motion is obtained by throwing into mesh the miter gearsj andzby shifting to the opposite side the lever Z of the eccentric-box Z, thus uniting the arrangements for leeding and revolving the log. The operator then turns the crank g and pinion], which revolves the mandrel (Z by the spurwheel 0, which in turn revolves the shal't- 7:, shaft 0-, and the feed-screws 'v and 0, thereby advancing the log toward the plancr head at every revolution of the log a distance equal to the thickness of saw-kert' and lumber to be sawed.

It will be seen that by the above-described machine the log will he planed in a convolnte form, as represented in Fig. 5, and the point at, showing the place where the planer-knives leave oil", and the line in represents the start ing-point and the saw-kert' of a band-saw or any other machine that cuts in a convolute path. Any lost motion of the spur-wheel c and pinionf, and the tendency ot the cutting of the planer-knives, which have to revolve the log in the opposite direction from which it is revolved by the operator, is prevented by abrake, which consists of a steel strap that tits around a projecting tlange, e, on the spur-wheel c, and is fastened to the end of the lever e", which is pivoted to the brarket H on the carriage (l, and is provided at the other end with a thumb screw, e that when turned will adjust the brake according to the tension required.

l l l l l l l Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a machine for planing logs convolutely, the combination ot' a main frame, a supportiiigfranie, movable carriages resting thereon, disks for sustaining the login position, means for adjusting the carriages carrying said disks the proper distance apart, and mechanism for sliding the carriages forward and revolving the log, substantially as described.

2. In a machine for planing logs convolutely, the combination of the frames A and B, the carriages G and O, the carriage 0 being adapted to be moved laterally and longitudinally, the disks m and x, and means for supporting and operating the same, postsD and D, planerhead E, journaled in bearings F and F, attached to said post, and mechanism for operating the same, substantially as described.

3. Inamaehineforplaninglogsconvolutely, the combination ol' the following elements or parts, viz: the shaft 70, journaled on the sliding carriage G in the eccentric box Z, for throwing the mitergearsj and i out and into mesh, the frame B in the anglebox m, provided with the miter-gear 7' on its inner end and the miter-gear p on the opposite end, which is feathered thereon, and the crank it, for revolving said shalt It and the shaft 1', which is journaled to the frame B in the angle-boxes m and s, and in the angle-box s on the longitudinal sliding frame B, and is provided with the miter-gear q and t, and the miter-gear t, feathered thereon, l'ortu rning the feed screws o and 1), which are provided with the mitergears in and a, the screw o being journaled to the frame 13 in the anglebox s, and the screw u'journaled to the longitudinal sliding l'rame in the angle-box 3, both being threaded in the bores 20 and w on the sliding carriages G and U, for the purpose of feeding up the log to the plauenhead while it is being revolved, all substantially as described and shown, and for the purpose hereinbel'ore set l'orth.

DAVID K. ALLINGTON.

Vitnesses:

t). A. MooREs, Cut-ts. J. STEPHEN. 

